Updated font family, bg-image gradient and margin

[joyjeetcoding]

Related Issue

• Issue number goes here: #213

Proposed Changes

• Change 1: Updated font family, bg-image gradient
• Change 2: Updated margin between "Our programs" and "Our Past events"

Checklist

• [x] Documentation of the code
• [x] Add your name to the CONTRIBUTORS file
• [x] Testing your code in the local machine

Screenshots

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[soumali28]

Looks great! Thanks

[joyjeetcoding]

You are welcome :)